I always de-ice the windscreen, or clear snow off it before I use the wipers in this weather....usually a quick single wipe after de-icing or de-snowing & have posted my experience in a number of threads eg - as above....but they failed to work 'properly' yesterday...after 'warming -up'..
This time they operated very slowly across the screen... both juddering slowly across the cleared screen & stopping part way through the wipe cycle...I had to push 'em back to the 'park position'...
Looks if I've got a more serious problem with 'em...as I heared a 'grinding noise' when they tried to operate...read various threads/posts on here about wiper problems in this weather - not found any relating to 'sheared' splines or teeth on the gear mechanism in the motor... but wonder if this case in this instance ???

Not investigated further as yet..but wondered if sheared splines/gear teeth etc. had been identified by anyone with wiper problems...
It's a 55 reg Facelift Club - comments I have seen on here suggest the Facelifts had 'modified' mechanisms fitted???
Any comments would be appreciated...
Cheers
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